Both of my children were born without any complications and it was nothing like you see on TV. It was very calm and not stressful at all. Best of luck and if you need someone to talk to, i'm here. Congrats also!
It would take extreme levels of stress to miscarry, so try not to worry about that. It's normal for women to be nervous about delivery, even mothers who have done it before. It's different in every pregnancy, so you never know what to expect. You WILL be able to do it, even if it feels like you won't.